1

1. PRESENTATION ........................................................................................ 3

1.1. INTRODUCTION AND NOMENCLATURE .......................................................... 3

1.1.1. INTRODUCTION..................................................................................................... 3

1.1.2. NOMENCLATURE .................................................................................................. 3

2. PSM ELECTRICAL ANALYSIS.................................................................. 4

2.1. SUPPLY MODULE ANALYSIS ............................................................................ 4

2.2. ANALYSIS OF THE GENERAL SAFETY ELEMENTS ........................................ 6

2.2.1. ANALYSIS OF THE DOOR SENSOR .................................................................... 7

2.2.2. ANALYSIS OF THE FILTER SENSOR ................................................................... 9

2.2.3. DEPRESSOR ANALYSIS ..................................................................................... 11

2.2.4. ANALYSIS OF THE ROTATION SENSOR ........................................................... 12

2.2.5. ANALYSIS OF THE FAN HOT WIRE SENSOR ................................................... 13

2.2.6. ANALYSIS OF THE SAFETY THERMOSTAT ..................................................... 14

2.2.7. ANALYSIS OF NO FLAME IN BURNER (ONLY GAS MODELS) ........................ 15

2.3. SELF-SERVICE .................................................................................................. 16

2.4. ANALYSIS OF THE PROBE CONNECTION ..................................................... 17

2.4.1. ANALYSIS OF TEMPERATURE PROBES .......................................................... 18

2.4.1.1. OPERATING PROBE ST1 ............................................................................ 19

2.4.1.2. CONTROL PROBE ST2 ............................................................................... 20

2.4.1.3. HUMIDITY PROBE SH ................................................................................. 21

2.5. ANALYSIS OF THE OUTPUTS.......................................................................... 22

2.5.1. ANALYSIS OF THE FAN ACTIVATION OUTPUT ................................................ 23

2.5.2. ANALYSIS OF THE HEATING ACTIVATION OUTPUT ....................................... 24

2.5.2.1. STEAM/THERMAL OIL ................................................................................ 25

2.5.2.2. ELECTRIC .................................................................................................... 26

2.5.2.3. GAS .............................................................................................................. 27

2.5.3. ANALYSIS OF THE DRUM ROTATION ACTIVATION OUTPUT ......................... 29

2.5.3.1. ACTIVATION OF THE DRUM ROTATION SIGNAL ..................................... 30

2.5.3.2. ACTIVATION OF THE CHANGE OF DIRECTION OF ROTATION ............... 31

2.5.4. ANALYSIS OF THE SPRINKLER SYSTEM ACTIVATION OUTPUT ................... 32

2.6. ANALYSIS OF THE RESET SYSTEM (ONLY GAS MODELS) ......................... 34

2.6.1. MODULES WITH RESET FROM REAR BLACK BUTTON .................................. 35

2.6.2. MODULES WITH RESET FROM PSM KEYBOARD ............................................ 36

2.7. ANALYSIS OF THE DRUM SPEED CONTROL ................................................ 37

2.8. ANALYSIS OF THE RECIRCULATION FLAP ................................................... 39

2

3. ANALYSIS OF ANALOGUE ELECTRICS ............................................... 41

3.1. ANALYSIS OF THE GENERAL SAFETY ELEMENTS ...................................... 41

3.1.1. FUSE ANALYSIS ................................................................................................. 42

3.1.2. ANALYSIS OF THE EMERGENCY STOP BUTTON ............................................ 43

3.1.3. ANALYSIS OF THE FAN HOT WIRE SENSOR ................................................... 44

3.1.4. DEPRESSOR ANALYSIS ..................................................................................... 45

3.1.5. ANALYSIS OF THE DOOR SENSOR .................................................................. 46

3.1.6. ANALYSIS OF THE FILTER SENSOR ................................................................. 47

3.1.7. ANALYSIS OF THE SAFETY THERMOSTAT ..................................................... 48

3.1.8. ANALYSIS OF NO FLAME IN BURNER (ONLY GAS MODELS) ........................ 49

3.1.9. ANALYSIS OF THE ROTATION SENSOR ........................................................... 50

3.2. ANALYSIS OF THE HEATING ACTIVATION .................................................... 51

3.2.1. STEAM/THERMAL OIL ........................................................................................ 52

3.2.2. ELECTRIC ............................................................................................................ 53

3.2.3. GAS ...................................................................................................................... 54

3.3. ANALYSIS OF THE RESETTING OF THE MODULES ..................................... 56

3.4. ANALYSIS OF THE FAN ACTIVATION ............................................................ 58

3.5. ANALYSIS OF THE ACTIVATION AND ROTATION OF THE DRUM ............... 59

3.6. ANALYSIS OF THE USER CONTROLS ............................................................ 60

3

1. PRESENTATION

1.1. INTRODUCTION AND NOMENCLATURE 1.1.1. INTRODUCTION

This document offers a detailed analysis of each of the connections present on the PSM range electronic plate and all the directly or indirectly related components, together with an analysis of all the analogue models.

The analysis of the digital models is directed at the PSM models after January 2016 and up to the new modification, and therefore there may be minor discrepancies with respect to earlier versions. Even so it may serve as reference for models prior to 2016.

1.1.2. NOMENCLATURE

This section lists the different nomenclatures, references and meanings which may appear in the document in alphabetical order.

AOF Æ Air output flap for CLEAN ROOM models AR Æ Rotary actuator of the recirculation flap CIO Æ Ionisation module (gas heating). CI Æ Rotation inversion timer (12149171) CT Æ Operating thermostat (12032432) D Æ Depressor Electrical diagram Æ This refers to diagram S293, S298, S312 and 313 for the digital models. S278 and S279, S314 and S315 for the analogue models F Æ Fuse (12037012) FA1 Æ Power supply source for the PSM (12135899) FA2 Æ Power source for the recirculation flap (12149159) KM1 Æ Fan motor contactor KR1 Æ Electric resistor contactor (electric heater) M1 Æ Fan motor M2 Æ Drum motor MP Æ Door switch. (12090513) MT Æ Filter switch. (12090513) OPL Æ Open operating mode, no payment required. PC Æ Heating pilot light (12016905)

PE Æ Emergency stop PM Æ Run pilot light (12025211) PR Æ No flame pilot light (12016905) PS Æ START button (12126193) PSM Æ Programmable microprocessor (12118728 OPL) (12098750 Self-service) RS Æ Reset button (12016811) SF Æ Sprinkler system sensor Self-Service Æ Pay operating mode. Payment is required to activate the machine SR Æ Rotation sensor (12032827) SS Æ Self-service connection for payment signal input. ST1 Æ Operating probe (12030918) ST2 Æ Safety probe (12030918) SH Æ Humidity probe (12119884) TEMP Æ Operating timer (12049916) TM1 Æ Fan motor thermal protection TS Æ Safety thermostat (12126296 Gas/Steam) (12135898 Electric) TSR Æ Drum rotation timer (12149171) TV Æ Steam heating flap VAC Æ AC voltage. VDC Æ DC voltage VF2 Æ Frequency variator for M2

4

2. PSM ELECTRICAL ANALYSIS

2.1. SUPPLY MODULE ANALYSIS The power module for the dryer has a switched-mode power supply source with a 230 VAC input and 12 VDC output and a tolerance of 10%.

The power supply source is protected by a 2A fuse located on the electrical control panel.

The fuse is a disposable cartridge type, and must be replaced in the event of breakage. It is marked on the diagram with the following symbol.

POWER SUPPLY SOURCE 12135899

2A FUSE 12037012

5

The power supply source input is via the blue, grey and earth cables. The voltage measured with the voltmeter at this point between the two cables should be 230 VAC. If a voltage supply is not detected, check that the fuse is not open and the power input to the machine is connected.

The output to the plate is via the grey cables marked 22 and 23. The voltage measured with the voltmeter at this point must be more than 12 VDC and less than 18 VDC. This power supply is connected on the numbers 22 (positive/grey) and 23 (negative/grey) of the plate.

There is also a bypass to earth on the number 23 connection. This is due to the need to eliminate parasitic elements which may have an effect on the potential difference at the current input leading to the poor operation of the plate.

6

2.2. ANALYSIS OF THE GENERAL SAFETY ELEMENTS The safety elements of the plate are distributed between numbers 1 and 12. They are voltage-free inputs in which the odd-numbered inputs (1,3,5,9,11) are used as common negative (connected directly to the power supply negative).

Each pair manages a safety element, except for pair 7, 8 which is explained in section 2.3 Self-Service. All the safety elements produce a shutdown in the machine operation and do not permit the machine to be rebooted until the signal is restored and/or reset.

There are two additional safety elements and the alarm is activated by a 230 V voltage. These safety elements are located on connectors 13 to 17. Safety elements 15 to 17 are only available for gas models.

PSM Plate 12118728/12098750

PSM Plate 12118728/12098750

7

2.2.1. ANALYSIS OF THE DOOR SENSOR

Numbers 1 and 2 correspond to the magnetic door sensor, which triggers ALARM 1 if the door is opened during operation.

The sensor must be in direct contact with the magnet for the correct operation. If there is a gap there may be a poor magnetic contact leading to error.

If there is no contact, bend the tab where the magnet is located towards the sensor.

Magnetic sensor 12090513

Ø13 magnet 12096891

Direct contact

Magnetic sensor 12090513

Sensor support 12115676

8

The plate connector is a voltage-free contact. To check the operation, create a bridge between connectors 1 and 2.

To prevent faults, check that the sensor connectors and the wiring are correct, that the connections are correctly linked and that the sensor is connected on the exact pins of the plate.

If the connection is not correct, repair or replace.

Create a bridge between 1 and 2

PSM Plate 12118728/12098750

PSM Plate 12118728/12098750

9

2.2.2. ANALYSIS OF THE FILTER SENSOR

Numbers 3 and 4 correspond to the filter magnetic sensor, which triggers ALARM 2 if the filter is opened during operation.

If the filter cover does not close correctly, the sensor will be open and ALARM 2 will be displayed. Fit the cover correctly to close the sensor circuit.

The plate connector is a voltage-free contact. To check the operation, create a bridge between connectors 3 and 4.

Magnetic sensor 12090513

Ø13 magnet 12096891

Magnetic sensor 12090513

Sensor support 12115676

Create a bridge between 3 and 4

PSM Plate 12118728/12098750

10

To prevent faults, check that the sensor connectors and the wiring are correct, that the connections are correctly linked and that the sensor is connected on the exact pins of the plate.

If the connection is not correct, repair or replace.

PSM Plate 12118728/12098750

11

2.2.3. DEPRESSOR ANALYSIS

Numbers 5 and 6 correspond to the depressor, which triggers ALARM 4 if the circuit is opened during operation.

The depressor checks there is an adequate air flow for carrying away heat energy from the dryer. If the pressure in the measurement pipes is too low during the heating phase, this will open and trigger ALARM 4 on the control plate.

The alarm has a 60-second delay before stopping the cycle for versions prior to 217. For later versions, there is a 35-second delay for steam models and a 15-second delay for gas and electric models.

If this occurs, check that the depressor pipes are clean. Blow through them to clean the pipes and inputs where they are connected.

The plate connector is a voltage-free contact. To check the operation, create a bridge between connectors 5 and 6.

Connection of measurement pipes to depressor

Connect of measurement pipes to the machine

DEPRESSOR 12049069

Create a bridge between 5 and 6

PSM Plate 12118728/12098750

12

2.2.4. ANALYSIS OF THE ROTATION SENSOR

Numbers 9 and 10 correspond to the rotation sensor (only for models with motor and pulley), which triggers ALARM 8 if there is no reading of the circuit within 15 seconds of operation. The alarm has a detection delay of 15 seconds after start-up.

The plate connector is a voltage-free contact. To check the operation, create a bridge between the connectors at intervals of less than 15 seconds. If the 15 seconds is exceeded, ALARM 8 should be triggered.

It is necessary to short-circuit between 9 and 10

within the 15 seconds

Rotation Sensor 12032827

Sensor magnetic 12043754

Sensor support 12145114

PSM Plate 12118728/12098750

13

2.2.5. ANALYSIS OF THE FAN HOT WIRE SENSOR

Numbers 11 and 12 correspond to the fan motor thermal switch, which triggers ALARM 5 if the circuit is opened during operation.

The thermal switch is activated if the motor overheats due to excess consumption or obstruction in the turbine. In this case, check that there is nothing obstructing the blades of the motor and preventing it from turning.

Wait a few minutes until the motor cools. Once cool, check whether it operates.

Check if the motor hot wire switch connection has continuity when the motor is cool.

The plate connector is a voltage-free contact. To check the operation, create a bridge between connectors 11 and 12.

There must be continuity between the two black

cables

Create a bridge between 11 and 12

PSM Plate 12118728/12098750

14

2.2.6. ANALYSIS OF THE SAFETY THERMOSTAT

Numbers 13 and 14 correspond to the activation of the safety thermostat. Some models have one thermostat and some have two. In either case, the thermostats are switched and send a 230V signal to terminal 13. Connect the power supply neutral to terminal 14. (For machines with 230 V III power supply, connect a different phase).

If there is a difference in potential of 230 V between terminal 13 and 14, the machine identifies that the thermostat has opened and displays ALARM 6.

If terminal 13 and 14 is disconnected, the alarm signal sent to the central module is eliminated. This does not resolve the problem that exists with the thermostat open. To reset, proceed as follows

PSM Plate 12118728/12098750

PSM Plate 12118728/12098750

ALARM 6 if there is 230 V between 13 and

14

Unscrew cap

ALARM

NORMAL

Press to reset

PSM Plate 12118728/12098750

GAS/STEAM SAFETY THERMOSTAT 12126296

ELECTRIC SAFETY THERMOSTAT 12135898

15

2.2.7. ANALYSIS OF NO FLAME IN BURNER (ONLY GAS MODELS)

Numbers 15 and 17 correspond to the activation of the no flame signal in the gas burner. There are four types of module. If no flame is detected by the ignition module detection spark plug, a 230 V is sent to terminal 15. Connect the power supply neutral to terminal 17. (For machines with 230 V III power supply, connect a different phase).

If there is a difference in potential of 230 V between terminal 15 and 17, the machine identifies that there is no flame and displays ALARM 3.

If terminal 15 and 17 is disconnected, the alarm signal sent to the central module is eliminated. This does not resolve the problem that exists with the module. To reset, it is necessary to reset the module as described in section 2.6 ANALYSIS OF THE RESET SYSTEM

PSM Plate 12118728/12098750

PSM Plate 12118728/12098750

ALARM 3 if there is 230 V between 15 and

17

PSM Plate 12118728/12098750

16

2.3. SELF-SERVICE The self-service connector is present in all models of plate even though it is only active with the self-service models. The connection is made between numbers 7 and 8.

When there is a pulse between the two pins, the machine manages it according to what is programmed in the programming menu.

In the above example, for each pulse received between the two pins, 7 and 8, the machine will add 60 seconds (1 minute) to the drying.

The second section indicates how many pulses should be received before the machine is activated for use. In this case, it will not start operating until three pulses are received in the machine.

The final result is an active machine after three pulses with a total of 3 minutes.

(60 s x 3 pulses = 180 seconds = 3 minutes)

Each pulse increases the time in XX seconds.

PSM Plate 12118728/12098750

17

2.4. ANALYSIS OF THE PROBE CONNECTION There are three probes for the operation of the dryer via PSM. The two temperature probes are NTC-type and control the activation of the heating. They are connected between pins 31 and 34. The third is a humidity probe which is only available in high range models or models in which it is included as an added extra. It is connected between pins 28 and 29.

PSM Plate 12118728/12098750

Temperature probe 12031344

Humidity probe 12119884

Humidity probe support 12145707

18

2.4.1. ANALYSIS OF TEMPERATURE PROBES

There are two temperature probes which are connected on terminals 31 and 32 for the ST1 probe and on terminals 33 and 34 for the ST2 probe. The temperature probes are NTC-type with a value of 49120 Ω (3970 K ± 1%) at a temperature of 25 ºC.

Temp. [ºC] R Nom (Ω) R Min (Ω) R Max (Ω) ΔR [±%] 25 49120 46388 51966 5.8 30 39517 37402 41715 5.6 35 31996 30347 33704 5.3 40 26065 24773 27400 5.1 45 21358 20339 22407 4.9 50 17599 16792 18428 4.7 55 14579 13937 15237 4.5 60 12140 11626 12665 4.3 65 10159 9746 10580 4.1 70 8541 8209 8880 4.0 75 7214 6945 7488 3.8 80 6120 5901 6342 3.6 85 5213 5034 5394 3.5 90 4459 4313 4606 3.3 95 3829 3709 3949 3.1

19

2.4.1.1. OPERATING PROBE ST1

The ST1 probe is located in the filter box for dryer stacks or the air output pipe for all other dryers and is the main operating probe. This is what determines whether the user programmed temperature (between 25 ºC and 95 ºC) is that of the dryer air flow, by sending the activation and/or stop signal of the heating contactor. The activation hysteresis is 2 ºC for gas heating and 4 ºC for the rest. If a value outside the range is detected, ALARM 9 is displayed with the text PROBE 1.

PSM Plate 12118728/12098750

Temperature probe 12031344

SINGLE DRYER

DRYER STACK

20

2.4.1.2. CONTROL PROBE ST2

The ST2 probe is located on the front of the heating battery, above the drum, and is the safety probe. It is responsible for preventing the temperature from rising too much at the front of the dryer. If the probe temperature exceeds 80 ºC, the contact will stop. The activation hysteresis is 6 ºC. If a value outside the range is detected, ALARM 9 is displayed with the text PROBE 2.

Temperature probe 12031344

SINGLE DRYER

DRYER STACK

PSM Plate 12118728/12098750

21

2.4.1.3. HUMIDITY PROBE SH

The SH probe is located on the air output pipe, just before the recirculation flap (for models with recirculation). The programmer calculates the absolute humidity of the air. In this way, in the exploration phase the fact that the highest value of the air humidity is observed is not affected by temperature as occurs with the relative humidity.

To make the calculation, the programmer should complete a simple operation which is to multiply the value of relative humidity by the air saturation density at the air temperature at that moment.

Habs= Hrel x Dsat

The programmer stores a table with the values of the air saturation density in kg water / m3air for each temperature. If a value outside the range is detected, ALARM 9 is displayed with the text PROBE H.

The humidity probe is used for the operation of the following options:

INTELLIGENT DRY, HUMIDITY CONTROL AND AIR RECYCLE

The probe connection is made.

• PIN 28 Æ Power supply +VCC • PIN 29 Æ Absolute humidity reading

Humidity probe support 12145707

Humidity probe 12119884

PSM Plate 12118728/12098750

22

2.5. ANALYSIS OF THE OUTPUTS The elements of the plate are distributed between numbers 35 and 49. These are outputs for the activation of the operating elements such as the extraction motor, heating, air flap (only in CLEAN ROOM models), variator, sprinkler system and recirculation flap (only recirculation models).

The PSM plate outputs are voltage free outputs. Operation is via a relay for load of 250 V and a maximum of 5 A. Any of the outputs can be checked through direct conductivity on the pins of the plate.

PSM Plate 12118728/12098750

23

2.5.1. ANALYSIS OF THE FAN ACTIVATION OUTPUT

Numbers 35 and 37 correspond to the activation output of the KM1 fan contactor. The contactor is located in the electrical panel and is different for analogue models and digital models.

Connection 37 receives the power supply phase signal. When the machine starts the cycle, the contact closes and the phase return to the contactor is sent through PIN 35. The contactor is supplied by inputs A1 and A2. In the case of CLEAN ROOM machines, the air output flap is also activated from this connection (AOF)

To activate the contactor manually in order to check its operation without needing the plate, press the central orange button.

GMC-6M contactor 12124512

MC-9b contactor 12132075

PRESS TO ACTIVATE MANUALLY

PSM Plate 12118728/12098750

24

2.5.2. ANALYSIS OF THE HEATING ACTIVATION OUTPUT

Numbers 38 and 40 correspond to the heating activation output. Depending on the type of machine, the contactor, the gas module or the rotary valve is activated.

Pin 40 receives the power supply phase signal. When the machine requires a higher temperature, the circuit closes and the phase return is sent to pin 38. Now, there is a difference depending on the model:

• For models with gear motor (models from 10 to 23 Kg), the phase return signal is sent to the frequency variator. This occurs as the gear motor models do not have a rotation sensor. In this way, the machine stops the heating if the drum is not moving. At the variator output, the signal goes towards the safety thermostat.

PSM Plate 12118728/12098750

25

• For models with pulley (models from 28 to 80 Kg), the phase return signal is sent directly to the safety thermostat.

From the safety thermostat the signal is sent to the machine's heating system:

2.5.2.1. STEAM/THERMAL OIL

For steam or thermal oil heating, the activation signal activates a rotary switch which moves a flap for the entrance of hot or cold air. The switch has three connections. Terminal 1 and 2 supply continuous power and terminal 3 activates the switch rotation.

To check the manual operation or reverse the operating mode (normally open to normally closed), turn the rotary switch using the upper connection. This will only operate if there is a voltage of 230 V between terminal 1 and 2.

1. NEUTRAL 2. PHASE (230 V) 3. ACTIVATION SIGNAL

TURN THE SWITCH TO CHANGE THE OPERATING

MODE

ROTARY SWITCH 12137221

GAS/STEAM SAFETY THERMOSTAT 12126296

ELECTRIC SAFETY THERMOSTAT 12135898

26

2.5.2.2. ELECTRIC

For heating with electrical resistors, the activation signal activates a KR1 contactor.

This 230 V three-phase or 400 V three-phase output contactor to the heating resistors. All the heating resistors are 2000 W (except the stacks which are 1333 W) and operate at 230 V.

The extra wiring for the connection of the resistors to 230 V III corresponds to the following references:

MODEL REFERENCE UNITS

10 Kg 12149173 1 18 Kg 12132018 1 23 Kg 12149317 1 28 Kg 12149322 1 36 Kg 12149031 1 45 Kg 12132018 3 60 Kg 12132018 4 80 Kg 12132018 4

KR1 CONTACTOR 230 V III POWER SUPPLY

KR1 CONTACTOR 400 V III POWER

KR1 CONTACTOR (MC-40a) 12088631

RESISTOR 12032899

27

2.5.2.3. GAS

For gas heating, the activation signal is sent to the ignition module. There are different models of gas module.

All the modules activate the ignition on receiving the signal at the connector indicated. To run tests, externally provide a 230 V signal at the terminal shown below for each one. The BRAHMA module is the only one which is activated via a bypass.

• HONEYWELL MODULE FOR 10 TO 36 KG MODELS (FORMER)

• HONEYWELL MODULE FOR 45 TO 80 KG MODELS (FORMER) •

RED MODULE 12129395

BLACK MODULE 12027445

ACTIVATION CONNECTION

ACTIVATION CONNECTION MODULE S4560A GREY 12027849

28

• SIT MODULE FOR DRYER STACKS AND NEW 10 TO 36 KG MODELS

• BRAHMA MODULE FOR NEW 45 TO 80 KG MODELS

ACTIVATION CONNECTION

SIT MODULE 12150322

BRAHMA MODULE 12154917

CREATE A BRIDGE BETWEEN 66 AND 67 (CONNECTORS 3 AND

7)

CREATE A BRIDGE BETWEEN 66 AND

67 (CONNECTORS 3 AND 7) OR PRESS THE RED BUTTON

29

2.5.3. ANALYSIS OF THE DRUM ROTATION ACTIVATION OUTPUT

Numbers 41 to 46 correspond to the drum rotation and activation output. This signal is sent to the variator which manages the output to the gear motor or the motor with the pulley.

The activation and rotation of the machine are managed with the power supply from the variator and do not require additional power.

PSM Plate 12118728/12098750

30

2.5.3.1. ACTIVATION OF THE DRUM ROTATION SIGNAL

Numbers 41 and 43 correspond to the drum activation output. The variator power supply is taken via pin 43. In the variator, the power supply is in the 12Vconnector.

The power supply in the variator is 12 VDC. To check that the voltage is correct, check between the COM and +12 V terminals.

Also check the voltage on the white wiring from pin 43 of the PSM to confirm that the correct voltage is received.

When the machine activates the signal for activation of the drum, the signal is sent to terminal 41. In turn, this is sent to terminal 46 of the PSM to manage the direction of rotation.

12 VDC VOLTAGE BETWEEN +12 V AND COM

PSM Plate 12118728/12098750

31

2.5.3.2. ACTIVATION OF THE CHANGE OF DIRECTION OF ROTATION

Numbers 44, 45 and 46 correspond to the management of the drum rotation.

The variator manages the rotation by receiving the power supply signal to DI1 or to DI2. Depending on where the signal is received, the drum will rotate clockwise or anticlockwise.

The variator power supply is taken via pin 46 of the PSM. The signal is sent to terminal 44 or 45 via the PSM switched relay.

If a bridge is manually created between +12V and DI1 the machine should rotate in one direction.

If a bridge is manually created between +12V and DI2 the machine should rotate in the opposite direction.

PSM Plate 12118728/12098750

32

2.5.4. ANALYSIS OF THE SPRINKLER SYSTEM ACTIVATION OUTPUT

Numbers 47 and 49 correspond to the sprinkler system activation output. Models with this system manage the temperature of the probes and if this coincides with the activation conditions, a signal is sent to the water solenoid valve.

Terminal 47 receives the 230 V signal from the power supply phase. When the conditions are correct, the relay closes and the phase return is sent to terminal 49. The water solenoid valve opens and water is sent along the extinction pipe.

PSM Plate 12118728/12098750

SPRINKLER VALVE 12025161

SPRINKLER PIPE 12145710

33

One of the following conditions is required for the sprinkler valve to open:

• The upper probe (2) detects a temperature >170 ºC.

• The lower probe (1) detects a temperature >80 ºC with respect to the programmed operating temperature.

• The lower probe (1) detects a temperature >170 ºC.

If any of the above conditions is fulfilled, the machine will activate the following routines:

• Activation of the sprinkler valve relay (output 47 and 49).

• Ventilation and heating relays inactive (output 35 to 38).

• The motor will turn at the minimum speed for 10 seconds in each direction. Between the changes of direction there will be a pause of 5 seconds. The voltage at the output of the PSM speed setting is 0 V.

• The plate buzzer is activated.

• AL-11 is displayed on the screen.

The routine ends when any of the following conditions is met:

• If the START/STOP button is pressed, provided that the temperature is less than 60 ºC.

• After 3 minutes if the temperature has fallen below 60 ºC at both probes.

• The above check is made every 30 seconds.

• After 15 minutes in any case.

34

2.6. ANALYSIS OF THE RESET SYSTEM (ONLY GAS MODELS) Alarm AL-3 exists in the gas models. This alarm indicates that there is no flame and therefore the ignition modules go into ALARM mode. To continue working, it is necessary to reset the gas module.

Depending on the type of module, it can either be reset using the black button located at the rear of the machine or from the PSM keyboard.

The models which can be reset from the rear using the switch are as follows:

The models which can be reset from the PSM keyboard are as follows:

35

2.6.1. MODULES WITH RESET FROM REAR BLACK BUTTON

This type of module is designed to be reset using a black button located at the rear of the dryer.

To reset directly from the module, proceed as follows:

• HONEYWELL MODULE BLACK AND RED

• •

• HONEYWELL MODULE GREY

RESET BUTTON 12016811

RED MODULE 12129395

BLACK MODULE 12027445

CREATE A BRIDGE BETWEEN 4 AND 5

MODULE S4560A GREY 12027849

CREATE A BRIDGE BETWEEN 4 AND NEUTRAL (3)

36

2.6.2. MODULES WITH RESET FROM PSM KEYBOARD

This type of module is designed to be reset using the black button and the PSM keyboard located at the front of the dryer.

The PSM microprocessor has 2 special outputs for resetting the ignition module. To reset, press the UP and DOWN arrows at the same time.

Operation via the plate is through the connectors from 50 to 55. When the PSM buttons are pressed, the microprocessor closes the contact between terminals 53 and 55. This supplies 230 VAC voltage to the module (pin 10) in order to be able to receive the reset signal.

Next the processor plate resets the plate by closing the contact between pins 50 and 52. These two wires close the circuit between terminals 1 and 2 of the gas module.

The SIT module needs 230 VAC between terminal 10 and 11 (neutral) in order to complete the reset.

BRAHMA MODULE 12154917

BRAHMA MODULE 12154917

SIT MODULE 12150322

SIT MODULE 12150322

TERMINALS FOR RESET OF THE MODULE

PRESS TOGETHER TO RESET

37

2.7. ANALYSIS OF THE DRUM SPEED CONTROL Numbers 24 and 27 correspond to the speed setting. The variator has an input for the management of the analogue speed value via a voltage of 0 to 10 V.

The speed of the drum rotation can be managed from the PSM settings menu. This value expressed as a percentage is proportional to the voltage sent to the variator. Therefore, 85% means 8.5 VCC to the variator. The default speed for each model is shown in the following table:

Kg Velocidad

Velocidad nominal de la secadora

85%70%55%

10 a 2327 a 36 45 a 80

The variator has a maximum programmed speed. This speed corresponds to a voltage of 10 VDC between COM and AI SPEED in the variator. As the voltage is reduced, the speed is also reduced in proportion. To apply the maximum speed to the variator, the +10 VDC output can be connected to the AI SPEED input.

PSM Plate 12118728/12098750

38

The speed is only programmable when the INTELLIGENT DRY option is deactivated. If the INTELLIGENT DRY mode is active, the dryer manages the speed automatically according to the microprocessor evaluation.

When Intelligent Dry is active, the time between each rotation reversal (rotation cycle) is fixed and cannot be changed. This value corresponds to the time needed to carry out the speed adaptation process. This time is initially set at 75 seconds.

The speed adaptation process consists of an exploration phase and a positioning phase.

During the exploration phase, the microprocessor has a voltage in its analogue output (24) that ranges between 4.5 and 9.5 volts such that the rotation speed of the drum varies according to this voltage.

During the exploration phase, the processor will emit 3 different voltages corresponding to:

Kg Vel.1 Vel.2 Vel.3

10 a 23 78% 85% 92%.27 a 36 63% 70% 77%45 a 80 48% 55% 62%

Rango de velocidades de Intelligent dry

The first voltage is emitted 10 seconds after a rotation cycle starts and lasts 10 seconds, during which a mean reading is taken of the absolute humidity. Immediately after this, the second voltage is emitted. This lasts a further eight seconds, during which another mean reading of the absolute humidity is taken.

This continues until a total of three different voltages have been completed. The first voltage starts 10 seconds after the rotation cycle starts and each assessed interval lasts 10 seconds, so that after 40 seconds the exploration phase will have terminated.

Immediately afterwards, the positioning phase starts where the microprocessor emits the output voltage corresponding to the voltage when the humidity value was at its highest. This voltage is continuous until the next speed adaptation process starts.

The speed adaptation processes will be repeated in the following way during the drying cycle:

No speed adaptation process will take place during the first rotation cycle, but will during the second cycle, the third and the fourth no, the fifth yes and so on successively.

39

2.8. ANALYSIS OF THE RECIRCULATION FLAP Numbers 25 and 27 correspond to the management of the opening of the recirculation flap. The rotary actuator operates with a voltage of 0 to 10 V.

In order to work with the management of the flap, it is necessary to activate the recirculation option from the programming menu. Once the option has been activated, the flap operating modes can be managed.

In AUTO mode the flap is regulated automatically according to the percentage humidity:

• If the humidity is between 1% and 25%, it is set to High mode. (8 V at the output) • If the humidity is between 26% and 35%, it is set to Medium mode. (6V at the output) • If the humidity is between 36% and 99%, it is set to Low mode. (4V at the output)

ROTARY SWITCH 12149162

40

For the operation of the switch it is necessary to install an additional power supply source. This power supply source is identified as FA2.

The 24 VDC power supply is supplied via connectors 1 and 2 of the switch. Terminal 1 is the negative and 2 the positive. The operating voltage is received via connector 3 of the switch. Terminal 3 receives the voltage from terminal 25 of the microprocessor.

SWITCH POWER SUPPLY

OPERATING VOLTAGE 0 TO 10 VDC

OPERATING VOLTAGE 0 TO 10 VDC

PSM Plate 12118728/12098750

41

3. ANALYSIS OF ANALOGUE ELECTRICS

3.1. ANALYSIS OF THE GENERAL SAFETY ELEMENTS For the analogue models, the safety elements are managed as part of the machine activation circuit. Any safety element opens the circuit and stops the machine if it is operating. If the machine is not operating, the safety elements will not permit activation. All the safety elements receive an operating voltage of 230 V.

The safety thermostat (TS), rotation sensor (SR) and the no flame alarm (PR) do not stop the machine operation, they only disconnect the heating.

42

3.1.1. FUSE ANALYSIS

The analogue system operates via the connection in series of all the safety elements. The start of this series is protected by a 2A fuse.

The 2A fuse is located in a fuse holder in the electrical control panel.

The fuse is a disposable cartridge type, and must be replaced in the event of breakage. It is marked on the diagram with the following symbol.

2A FUSE 12037012

43

3.1.2. ANALYSIS OF THE EMERGENCY STOP BUTTON

The PE nomenclature corresponds to the emergency stop button which stops the machine in the event of opening of the circuit during operation.

When the emergency button is pressed, the 230 VAC power supply to the whole activation circuit is disconnected. To reset the button, turn the red part 90º.

The emergency button is normally closed. It is possible to create a bridge between the terminals to disconnect it in order to test this.

EMERGENCY STOP BUTTON 12149154

44

3.1.3. ANALYSIS OF THE FAN HOT WIRE SENSOR

The TM nomenclature corresponds to the fan motor hot wire which stops the machine in the event of opening of the circuit during operation.

The thermal switch is activated if the motor overheats due to excess consumption or obstruction in the turbine. In this case, check that there is nothing obstructing the blades of the motor and preventing it from turning.

Wait a few minutes until the motor cools. Once cool, check whether it operates.

Check if the motor hot wire switch connection has continuity when the motor is cool.

To cancel the operation by way of test, a bridge can be created between the connectors.

There must be continuity between the two black

cables

45

3.1.4. DEPRESSOR ANALYSIS

The D nomenclature corresponds to the depressor which stops the machine in the event of opening of the circuit during operation.

The depressor checks there is an adequate air flow for carrying away heat energy from the dryer. If the pressure in the measurement pipes is too low during the heating phase, this will open to stop the machine.

When the machine starts operating via the green START button, the depressor is open. The green button makes a bypass until the depressor has enough pressure to maintain the pressure. Now the green button can stop being pressed and the machine remains active.

If the machine does not remain active, check that the depressor pipes are clean. Blow through them to clean the pipes and inputs where they are connected.

The factory settings for the depressor are 60 Pa for the closure and 40 Pa for the opening.

Connection of measurement pipes to depressor

Connect of measurement pipes to the machine

DEPRESSOR 12049069

46

3.1.5. ANALYSIS OF THE DOOR SENSOR

The MP nomenclature corresponds to the door magnetic sensor which stops the machine in the event of opening of the circuit during operation.

.

The sensor must be in direct contact with the magnet for the correct operation. If there is a gap there may be a poor magnetic contact leading to error.

To prevent faults, check that the sensor connectors and the wiring are correct, and that the connections are correctly linked.

If there is no contact, bend the tab where the magnet is located towards the sensor.

Magnetic sensor 12090513

Ø13 magnet 12096891

Direct contact

Magnetic sensor 12090513

Sensor support 12115676

47

3.1.6. ANALYSIS OF THE FILTER SENSOR

The MT nomenclature corresponds to the filter magnetic sensor which stops the machine in the event of opening of the circuit during operation.

If the filter cover does not close correctly, the sensor will be open and the machine is stopped. Fit the cover correctly to close the sensor circuit.

It is a good idea to check that the sensor connectors and the wiring are correct, and that the connections are correctly linked.

Magnetic sensor 12090513

Ø13 magnet 12096891

Magnetic sensor 12090513

Sensor support 12115676

48

3.1.7. ANALYSIS OF THE SAFETY THERMOSTAT

The TS nomenclature corresponds to the safety thermostat which stops the heating in the event of opening during operation. Some models have one thermostat and some have two. In either case, the thermostats are switched and send a 230 V signal to the TSR relay to activate the heating.

When the safety thermostat opens the circuit, it must be reset manually. To reset, proceed as follows:

Unscrew cap

ALARM

NORMAL

Press to reset

GAS/STEAM SAFETY THERMOSTAT 12126296

ELECTRIC SAFETY THERMOSTAT 12135898

49

3.1.8. ANALYSIS OF NO FLAME IN BURNER (ONLY GAS MODELS)

The PR nomenclature corresponds to the no flame red pilot light. If the ignition module detects that there is no flame in the burner, this sends a 230 V output to activate the rear red pilot light. There are 4 different types of module.

The red pilot is located at the rear of the machine with the reset button.

To reset the light, reset the module by pressing the black reset button. In section 3.3. ANALYSIS OF THE RESETTING OF THE MODULES this explains how to reset the modules manually.

RESET BUTTON 12016811

RED PILOT LIGHT 12036462

50

3.1.9. ANALYSIS OF THE ROTATION SENSOR

The SR nomenclature corresponds to the rotation sensor (only for models with motor and pulley), which stops the heating in the event of a drum rotation failure during operation.

The rotation sensor activates a timer relay (TSR) which maintains the heating circuit closed. If the relay does not receive a signal from the sensor within 10 seconds, the relay will open the heating circuit and disconnect it.

TSR timer 12149171

Rotation Sensor 12032827

Rotation Sensor 12032827

Sensor magnetic 12043754

Sensor support 12145114

51

3.2. ANALYSIS OF THE HEATING ACTIVATION The timer enables the heating signal whenever a time of more than 7 minutes has been programmed. If the operating thermostat so requires, the heating signal will be activated. Depending on the type of machine, the contactor, the gas module or the rotary valve is activated.

When the timer has a programmed time of more than 7 minutes, 230 V is sent to the thermostat. if there is a demand for temperature from the thermostat, this sends 230 V to the safety thermostat. Now, there is a difference depending on the model:

• For models with gear motor (10 to 23 Kg models) the 230 VAC signal is sent to the frequency variator. This occurs as the gear motor models do not have a rotation sensor. In this way, the machine stops the heating if the drum is not moving. At the variator output, the signal goes towards the heating.

OPERATING THERMOSTAT 12032432

OPERATING TIMER 12049916

52

• For models with pulley (models from 28 to 80 Kg), the phase return signal is sent directly to the TSR relay to stop the machine if there is no rotation.

Next, this is activated depending on the machine heating system:

3.2.1. STEAM/THERMAL OIL

For steam or thermal oil heating, the activation signal activates a rotary switch which moves a flap for the entrance of hot or cold air. The switch has three connections. Terminal 1 and 2 supply continuous power and terminal 3 activates the switch rotation.

To check the manual operation or reverse the operating mode (normally open to normally closed), turn the rotary switch using the upper connection. This will only operate if there is a voltage of 230 V between terminal 1 and 2.

1. NEUTRAL 2. PHASE (230 V) 3. ACTIVATION

TURN THE SWITCH TO CHANGE THE OPERATING

MODE

ROTARY SWITCH 12137221

TSR TIMER 12149171

53

3.2.2. ELECTRIC

For heating with electrical resistors, the activation signal activates a KR1 contactor.

This 230 V three-phase or 400 V three-phase output contactor to the heating resistors. All the heating resistors are 2000 W (except the stacks which are 1333 W) and operate at 230 V.

The extra wiring for the connection of the resistors to 230 V III corresponds to the following references:

MODEL REFERENCE UNITS

10 Kg 12149173 1 18 Kg 12132018 1 23 Kg 12149317 1 28 Kg 12149322 1 36 Kg 12149031 1 45 Kg 12132018 3 60 Kg 12132018 4 80 Kg 12132018 4

KR1 CONTACTOR 230 V III POWER SUPPLY

KR1 CONTACTOR 400 V III POWER

KR1 CONTACTOR (MC-40a) 12088631

RESISTOR 12032899

54

3.2.3. GAS

For gas heating, the activation signal is sent to the ignition module. There are different models of gas module.

All the modules activate the ignition on receiving the signal at the connector indicated. To run tests, externally provide a 230 V signal at the terminal shown below for each one. The BRAHMA module is the only one which is activated via a bypass.

• HONEYWELL MODULE FOR 10 TO 36 KG MODELS (FORMER)

• HONEYWELL MODULE FOR 45 TO 80 KG MODELS (FORMER) •

RED MODULE 12129395

BLACK MODULE 12027445

ACTIVATION CONNECTION

ACTIVATION CONNECTION MODULE S4560A GREY 12027849

55

• SIT MODULE FOR DRYER STACKS AND NEW 10 TO 36 KG MODELS

• BRAHMA MODULE FOR NEW 45 TO 80 KG MODELS

ACTIVATION CONNECTION

SIT MODULE 12150322

BRAHMA MODULE 12154917

CREATE A BRIDGE BETWEEN 66 AND 67 (CONNECTORS 3 AND

7)

CREATE A BRIDGE BETWEEN 66 AND

67 (CONNECTORS 3 AND 7) OR PRESS THE RED BUTTON

56

3.3. ANALYSIS OF THE RESETTING OF THE MODULES This type of module is designed to be reset using a black button located at the rear of the dryer.

To reset directly from the module, proceed as follows:

• HONEYWELL MODULE BLACK AND RED

• •

• HONEYWELL MODULE GREY

RESET BUTTON 12016811

RED MODULE 12129395

BLACK MODULE 12027445

CREATE A BRIDGE BETWEEN 4 AND 5

MODULE S4560A GREY 12027849

CREATE A BRIDGE BETWEEN 4 AND NEUTRAL (3)

57

• SIT MODULE

The SIT module needs 230 VAC between terminal 10 and 11 (neutral) in order to complete the reset.

• BRAHMA MODULE

BRAHMA MODULE 12154917

BRAHMA MODULE 12154917

SIT MODULE 12150322

SIT MODULE 12150322

TERMINALS FOR RESET OF THE MODULE

TERMINALS FOR RESET OF THE MODULE

TERMINALS FOR RESET OF THE MODULE

58

3.4. ANALYSIS OF THE FAN ACTIVATION The KM1 nomenclature corresponds to the fan motor. This motor is activated when all the safety elements are correct and an operating time has been programmed.

When the machine starts the cycle, the phase is sent to the contactor via a green button bypass. Once the depressor closes, the circuit remains active alone. The contactor is supplied by inputs A1 and A2. The contactor has a normally open output which allows the machine to be stopped if the fan motor stops.

To activate the contactor manually in order to check its operation without needing the plate, press the central orange button.

GMC-6M contactor 12124512

MC-9b contactor 12132075

PRESS TO ACTIVATE MANUALLY

59

3.5. ANALYSIS OF THE ACTIVATION AND ROTATION OF THE DRUM The variator manages the activation of the drum via the KM1 auxiliary contact. When the fan motor is active, the power supply is taken from the variator and sent to the CI timer via the auxiliary contact. In the variator, the power supply is in the 12Vconnector.

The power supply in the variator is 12 VDC. To check that the voltage is correct, check between the COM and +12 V terminals.

The rotation is managed by receiving the power supply signal to DI1 or to DI2. Depending on where the signal is received, the drum will rotate clockwise or anticlockwise. To do so, the CI timer is used, and this changes the direction of rotation every minute.

If a bridge is manually created between +12V and DI1 the machine should rotate in one direction.

If a bridge is manually created between +12V and DI2 the machine should rotate in the opposite direction.

12 VDC VOLTAGE BETWEEN +12 V AND COM

CI TIMER 12149171

60

3.6. ANALYSIS OF THE USER CONTROLS The machine controls are found on the front of the machine. The operating timer, the operating thermostat, the START button and the two information pilot lights.

• The operating timer operates from 0 to 60 minutes. The last 7 minutes disconnect the heating circuit.

• The operating thermostat operates from 0 ºC to 90 ºC. • The START button creates a bypass of the depressor and the normally open contact of the KM1

in order to start operating. If it is no longer pressed, after a few seconds the machine remains active provided the depressor has reached the operating pressure.

• The green pilot light indicates that the machine is in operating mode. It may also indicate that all the safety elements are correct except for the open filter or open door sensor. If the machine does not start the cycle and the green pilot light does not come on, these two sensors should be checked.

• The red pilot light indicates a demand for heating. While it is lit, the heating is active.

OPERATING TIMER 12049916

OPERATING THERMOSTAT 12032432

START BUTTON 12126193

GREEN PILOT LIGHT 12025211

RED PILOT LIGHT 12016905